On 2011-12-23 18:55, Kostik Belousov wrote:
On Fri, Dec 23, 2011 at 06:03:42PM +0100, Dimitry Andric wrote:
...
The only thing my patch makes sure of, is that amd64 does the same thing
as all other arches, e.g.: compile with a low optimization settings for
debug (-O, which is equivalent to -O1), compile with arch-specific high
optimization settings for release (-O2 plus whatever is required for the
arch, or lower if optimization breaks things).

Release is built with -g for long time, this is where the symbol files
in /boot/kernel comes from.

Ah, that is done via 'makeoptions DEBUG=-g' in the kernel configuration
file, right?  I didn't realize that was kept in for a release.  But even
in that case, amd64 is somehow different from the other arches, which
all get compiled with -O instead.

If people prefer that to stay as it is, I'll change the diff so only
-frename-registers gets removed when clang is used, as clang does not
support this flag.
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